Loop drier



Patented Apr. 15, 1924.

N T STA ES PATENT OFFICE.

HERMANN BOGATY AND FREDERICK xnnsn w, or nrLAnE LPmA, PENNSYLVANIA,

ASSIGNORS 'ro Pnocron a scnw nrz, rNconPonArnn, or PHILADELPHIA, PENN- SYLVANIA, A oonronA'rro or PE NSY I moP nnmn.

hpp lleationflled September 20, 1922. Serial No. 589,356.

To all whom it may concern:

Be it known that we, HERMANN BOGATY and FREDERICK KERSHAW, citizens of the United States, residing in Philadelphia,

I Pennsylvania, have invented certain Improvements .in Loop Driers, of which the following is a specification.

Our invention relates to certain improvements in the type of drying apparatus known 10 as a loop drier, in which astrip of cloth, or other material, is fed through the drying chamber while hanging from supports that are carried by moving chains.

The object of ourinvention is to increase ll the capacity of adrying apparatus of the type above described and to provide a wide space between the supports at the feed end of the machine to allow the material to move freely while a loop is being formed.

In the accompanying drawings:

Fig. 1 is a side view of a drying apparatus, broken away at each end to illustrate our invention;

Fig. 2 is a transverse sectional view on the line 22, Fig. 1;

Fig. 3 is an enlarged longitudinal sectional view of the means for supporting the material and the mechanism for separating the supporting bars at the feed end of the machine;

Fig. 4 is a transverse sectional viewon th e line 4--4, Fig. 3, showing the supports for the carrier;

Fig. 5 is a view illustrating a'modification, in which the supporting bars are suspended from the carrier; I

Fig. 6 is a sectional view on the line 6-43, and

Fig. 7 is a view partly in section illustrating a modification of the invention, in which the bars are separate from the carrier. Referring to Figs. 1 and 2, 1 is the casing of a drying apparatus, which may be of any length desired. 2 is a longitudinal artition separating the drying chamber a om the heating chamber b. In the upper portion of the partition are fan openings 3. The fans 4 are mounted on shafts 5 having their bearings in the casin of the ap aratus and drlven in any suita le manner. 11 the lower portion of the partition 2 are openings 6,

which allow the heated air to circulate freely in the chambers a and b. Inthe chamber 6 are steam pipes 7 for heatingthe air in circulation.

Located in the drying chamber a areupper rails 9 and lower rails 10 for the carrier chains 11 having rollers 12, which travelon the rails. Thecarrier chains are connected by the supporting bars 13, which are attached to arms 14 pivotally mounted on pins 15 of the chains 11. The links of the chains are comparatively long and a series of arms is pivoted to each link, as shown in Fig. 3. The chains 11 pass around guide wheels 16 mounted on shafts 17. One of the shafts 17 may be driven to impart movement to the carrier chains.

In the present instance, the arms 14 are forked at their lower ends and extend over the chains 11. The rollers 12 are mounted on spindles 18, which connect the links of the chain and a roller is mounted on each end of each spindle, as shown in Fig. 4. Each arm 14 has an extension 19 beyond the pivot 15. At the forward end of each upper rail 9 is a tripper plate 20 made as shown in Figs. 3 and'4. Each plate has a shoulder 21 in the path of the extensions 19 of the arms 14 so that each arm is shifted from one side of the pivot to. the other side, as shown in Figs. 1 and 3.

By this construction, a widespace w is formed between the bars 13 at the feed end of the apparatus through which the material can pass freely into the drying chamber to form a loop. When a baris shifted, it carries the formed loop away from the feed opening so that another loop can be formed. When a bar is shifted, it is in close proximity to another bar having a loop thereon so that the bars are closely assembled while traveling through the drying chamber. The spaces between the bars and the looped material are such as to allow the heated air to circulate freely.

The tripper plates are in the form of brackets, each having a base 22 slotted at 23 for the securing bolts 24 so that the tripper plates can be longitudinally adjusted. A

racket 25 on each rail 9 carries an adjusting screw 26, which is in contact with the end of the tripper plate 20, as shown in Fig. 3. The construction of the means for turning the carrying bars may be modified without departing from the main feature of the invention.

In the present instance, there are two feed rollers at the feed end of the machine and the material passes through a slot in the easing to form a loop. When the material being dried reaches the opposite end of the dryingchamber, it passes through an opening in the casing and over a roller 28 and around rollers 29 to the folding mechanism 30 of the ordinary construction.

.Figs. 5 and 6 illustrate modifications of the invention, in which the supporting bars for the material are suspended from the carrying chains. 11 are the carrying chains arranged to travel on the rails 9. 14 are arms pivotally connected to the chains, as shown, and attached to the arms are the supporting bars 13. The bars 13 are held back by an inclined plate 20 to increase the space 00' between the bars at the feed end of the machine to allow the material to be fed into the machine to form a loop. After a loop is formed, the chain is moved forwardreleasing a bar from the plate 20" so which the bars are detachable.

that it will swing into position close to a bar that was previously released.

In order to prevent the bars from swinging on their pivots when they are in proper position, each arm is provided with a shoe 31 that passes under a rail 32, which is of sufficient length to hold the bars in position.

Fig. 7 illustrates a drying apparatus, in The arms 14*, in this instance, have open sockets 14 that receive the bars 13 from a hopper 33 at the feed end of the machine. The arms are moved in the manner shown in Fig. 3. When the materialis removed from the bars, the bars are free to drop out of their sockets in the arms when the chain passes over a guide wheel.

The carrier may be driven intermittently, or continuously, as desired.

,We claim:

1. The combination in adrying apparatus, of a carrier; supports on the carrier, on which the material to-be dried is looped; means, at the feed end of the apparatus, for separating the supports to allow the material to be formed into loops; and means for feeding the material between the two separated supports.

2. The combination in a drying apparatus, of a carrier; supports, on the carrier, on which the material to be dried is looped; means for turning the supports from one side of their pivots to the other side to form a wide passage for the material as it is formed in a loop; and means for feeding the material into the wide space.

'3. The combination in a drying apparatus, of a casing enclosing a chamber; means for circulating heated air in the chamber; an endless carrier in the chamber; a series of arms on the carrier supporting bars for the material to be dried, said bars being carried by thearms; means for separating the bars at the feed end of the apparatus to increase the space between the two bars to allow the material to be formed into a loop; and means for moving the bars close together after a loop is formed.

4-. The combination in a drying apparatus, of a casing forming a drying chamber; means for circulating heated air in the chamber; an endless chain carrier located in the drying chamber; arms pivoted to the carrier; cross bars on the arms for supporting the loops of material to be dried; extensions on the arms; and a plate in the path of the extensions, which causes the arms and their bars to turn from one side of their pivots to the other side thereof,

forming a wide space for the passage of the material as it forms a loop. 7

5. The combination of rails; carrying chains arranged to travel on said rails; arms pivoted to the chains; bars connecting the arms, the pivots being close together; extensions on the arms; and a shouldered plate in the path of the extensions so that, as the'carrier chains'move, the extensions come in contact with the shoulder of the plate and are turned on their pivots.

6. The combination of rails; carrier chains on said rails, the chains being composed of long links pivotally connected; rollers at the pivots; a series of arms pivotally mounted on each link; bars on the arms for supporting the loops of material to be dried; and means for turning the arms on their pivots.

r HERMANN BOGATY.

FREDERICK KERSHAW. 

